JP2021131278A - Hetero-core optical fiber sensor device - Google Patents

Hetero-core optical fiber sensor device Download PDF

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JP2021131278A
JP2021131278A JP2020025847A JP2020025847A JP2021131278A JP 2021131278 A JP2021131278 A JP 2021131278A JP 2020025847 A JP2020025847 A JP 2020025847A JP 2020025847 A JP2020025847 A JP 2020025847A JP 2021131278 A JP2021131278 A JP 2021131278A
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heterocore
optical fiber
fiber sensor
core
sensor device
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JP7465464B2 (en
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藍 細木
Ai Hosoki
藍 細木
望 櫻井
Nozomi Sakurai
望 櫻井
道子 西山
Michiko Nishiyama
道子 西山
宣一 久米川
Senichi Kumegawa
宣一 久米川
一弘 渡辺
Kazuhiro Watanabe
一弘 渡辺
博幸 佐々木
Hiroyuki Sasaki
博幸 佐々木
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Research Organization of Information and Systems
Soka University
Core System Japan Co Ltd
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Soka University
Core System Japan Co Ltd
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Abstract

To provide a hetero-core optical fiber sensor device that is able to detect a plurality of compounds with a single device.SOLUTION: A hetero-core optical fiber sensor device 1 includes: an optical transmission portion 2 having a core 5a and a clad 6a; and a hetero-core portion 3 having a core 5b and a clade 6b. The hetero-core optical fiber sensor further includes a hetero-core optical fiber 4 in which a core 5b is smaller in diameter than a core 5b. A coating film 7 made of a negatively chargeable lipid is provided on an outer peripheral surface of a clad 6 of the hetero-core portion 3 to detect a compound acting on the negatively chargeable lipid.SELECTED DRAWING: Figure 1

Description

本発明は、ヘテロコア光ファイバセンサ装置に関する。 The present invention relates to a heterocore optical fiber sensor device.

近年、コア及びクラッドを有する光伝送部と、該光伝送部のコア及びクラッドに各々連なる一方、該光伝送部のコアと異なる直径のコア及びクラッドを有するヘテロコア部とを備えるヘテロコア光ファイバを各種センサに用いることが検討されている。 In recent years, various types of heterocore optical fibers have an optical transmission unit having a core and a clad, and a heterocore unit having a core and a clad having a diameter different from that of the core of the optical transmission unit while being connected to the core and the clad of the optical transmission unit, respectively. It is being considered for use in sensors.

従来、ヘテロコア光ファイバを用いるヘテロコア光ファイバセンサ装置として、例えば、前記ヘテロコア部の前記クラッドの外周面に水素吸蔵物質のナノ粒子が疎である状態で固定されてなる光応答部を備える光ファイバ水素センサが知られている(例えば、特許文献1参照)。 Conventionally, as a heterocore optical fiber sensor device using a heterocore optical fiber, for example, an optical fiber hydrogen provided with an optical response portion in which nanoparticles of a hydrogen storage substance are fixed in a sparse state on the outer peripheral surface of the clad of the heterocore portion. Sensors are known (see, for example, Patent Document 1).

特開2019−32229号公報Japanese Unexamined Patent Publication No. 2019-32229

特許文献1記載の光ファイバ水素センサでは、光を受けたときの前記光応答部の応答、例えば光伝送部からヘテロコア部のクラッドに進入する光の外部に漏洩する割合が、該光ファイバの周囲の水素濃度に応じて変化する。そこで、前記光ファイバ水素センサによれば、前記ヘテロコア部における所定波長の光の吸収度合(ひいては、光ファイバでの所定波長の光の伝送強度の減衰度合)を検出することにより、該光ファイバの周囲の水素濃度を検知することができる。 In the optical fiber hydrogen sensor described in Patent Document 1, the response of the optical response unit when receiving light, for example, the rate of leakage of light entering the clad of the heterocore portion from the optical transmission unit to the outside is the periphery of the optical fiber. It changes according to the hydrogen concentration of. Therefore, according to the optical fiber hydrogen sensor, the degree of absorption of light having a predetermined wavelength in the heterocore portion (the degree of attenuation of the transmission intensity of light having a predetermined wavelength in the optical fiber) is detected to detect the degree of attenuation of the optical fiber. The ambient hydrogen concentration can be detected.

しかしながら、従来のヘテロコア光ファイバセンサ装置では、特定の化合物又は該化合物の濃度を検知の対象とするだけであり、単一の装置で複数の化合物を検知の対象とすることが困難であるという不都合がある。 However, in the conventional heterocore optical fiber sensor device, only a specific compound or the concentration of the compound is targeted for detection, and it is difficult to detect a plurality of compounds with a single device, which is an inconvenience. There is.

本発明は、かかる不都合を解消して、単一の装置で複数の化合物を検知の対象とすることができるヘテロコア光ファイバセンサ装置を提供することを目的とする。 An object of the present invention is to provide a heterocore optical fiber sensor device capable of eliminating such inconveniences and detecting a plurality of compounds with a single device.

かかる目的を達成するために、本発明のヘテロコア光ファイバセンサ装置は、コア及びクラッドを有する光伝送部と、該光伝送部のコア及びクラッドに各々連なるコア及びクラッドを有するヘテロコア部とを備え、該ヘテロコア部のコアが該光伝送部のコアよりも小径である光ファイバを備えるヘテロコア光ファイバセンサ装置であって、該ヘテロコア部のクラッドの外周面に、負荷電性脂質からなる被覆膜を備え、該負荷電性脂質に作用する化合物を検知することを特徴とする。 In order to achieve such an object, the heterocore optical fiber sensor apparatus of the present invention includes an optical transmission unit having a core and a clad, and a heterocore unit having a core and a clad connected to the core and the clad of the optical transmission unit, respectively. A heterocore optical fiber sensor device including an optical fiber in which the core of the heterocore portion has a diameter smaller than that of the core of the optical transmission portion, and a coating film made of a loaded electric lipid is provided on the outer peripheral surface of the clad of the heterocore portion. It is characterized in that it detects a compound that acts on the loaded electric lipid.

本発明のヘテロコア光ファイバセンサ装置では、前記光伝送部のコアを介して光を伝送すると、前記ヘテロコア部でクラッドに漏れ出した光が前記負荷電性脂質からなる被覆膜で反射する。このとき、前記被覆膜の周囲の外界に前記負荷電性脂質に作用する化合物が存在すると、該化合物の作用により該負荷電性脂質からなる該被腹膜の屈折率が変化し、この結果、該被覆膜で反射する光の強度が変化する。 In the heterocore optical fiber sensor device of the present invention, when light is transmitted through the core of the optical transmission section, the light leaked to the clad at the heterocore section is reflected by the coating film made of the loaded electric lipid. At this time, if a compound acting on the loaded electric lipid is present in the outside world around the covering film, the refractive index of the abdominal membrane composed of the loaded electric lipid changes due to the action of the compound, and as a result, the refractive index of the abdominal membrane composed of the loaded electric lipid changes. The intensity of the light reflected by the coating film changes.

そこで、本発明のヘテロコア光ファイバセンサ装置によれば、前記ヘテロコア部の前記被覆膜で反射する光の強度の変化を検出することにより、前記被覆膜の周囲の外界に存在する化合物を検知することができる。このとき、前記負荷電性脂質からなる前記被腹膜の屈折率の変化は、該負荷電性脂質に作用する化合物により異なるので、前記ヘテロコア部の前記被覆膜で反射する光の強度の変化度合により、複数の化合物を検知の対象とすることができる。 Therefore, according to the heterocore optical fiber sensor device of the present invention, a compound existing in the outside world around the coating film is detected by detecting a change in the intensity of light reflected by the coating film of the heterocore portion. can do. At this time, since the change in the refractive index of the peritoneum composed of the loaded electric lipid differs depending on the compound acting on the loaded electric lipid, the degree of change in the intensity of light reflected by the coating film of the heterocore portion is high. Therefore, a plurality of compounds can be detected.

本発明のヘテロコア光ファイバセンサ装置では、前記負荷電性脂質として、オレイン酸又はリン酸ジオクチルを用いることができる。 In the heterocore optical fiber sensor device of the present invention, oleic acid or dioctyl phosphate can be used as the loaded electric lipid.

また、本発明のヘテロコア光ファイバセンサ装置において、前記負荷電性脂質に作用する化合物として、キニーネ、シンコニジン、ヒドロキニジン、ストリキニーネ、グラミン、パパベリン、ノルラウダノシン、カフェイン、デオフィリン、チアミン、ダイゼインからなる群から選択される1種の化合物を挙げることができる。 Further, in the heterocore optical fiber sensor device of the present invention, the compound acting on the loaded electric lipid includes a group consisting of quinine, cinchonidine, hydroquinidine, strychnine, gramine, papaverine, norlaudanocin, caffeine, deophylline, thiamine and daidzein. One compound of choice can be mentioned.

本発明のヘテロコア光ファイバセンサ装置のセンサ部の構成を示す説明的断面図。Explanatory sectional view which shows the structure of the sensor part of the heterocore optical fiber sensor apparatus of this invention. 本発明のヘテロコア光ファイバセンサ装置の装置構成の一例を示す説明図。The explanatory view which shows an example of the apparatus configuration of the heterocore optical fiber sensor apparatus of this invention. 本発明のヘテロコア光ファイバセンサ装置において、オレイン酸からなる被覆膜を備えるときに検出された各化合物の光損失を示すグラフ。The graph which shows the optical loss of each compound detected when the coating film made of oleic acid is provided in the heterocore optical fiber sensor apparatus of this invention. 本発明のヘテロコア光ファイバセンサ装置において、リン酸ジオクチルからなる被覆膜を備えるときに検出された各化合物の光損失を示すグラフ。The graph which shows the optical loss of each compound detected when the coating film made of dioctyl phosphate is provided in the heterocore optical fiber sensor apparatus of this invention. 本発明のヘテロコア光ファイバセンサ装置において、オレイン酸からなる被覆膜を備えるときに検出された光損失スペクトルであって、水と複数の濃度のキニーネとの比較を示すグラフ。A graph showing a comparison between water and quinine having a plurality of concentrations, which is a light loss spectrum detected when a coating film made of oleic acid is provided in the heterocore optical fiber sensor device of the present invention. 本発明のヘテロコア光ファイバセンサ装置において、リン酸ジオクチルからなる被覆膜を備えるときに検出された光損失スペクトルであって、水とキニーネとの比較を示すグラフ。FIG. 5 is a graph showing a comparison between water and quinine, which is a light loss spectrum detected when a coating film made of dioctyl phosphate is provided in the heterocore optical fiber sensor device of the present invention. 本発明のヘテロコア光ファイバセンサ装置において、オレイン酸からなる被覆膜を備えるときに検出された各化合物の光損失と、リン酸ジオクチルからなる被覆膜を備えるときに検出された各化合物の光損失との比較を示すグラフ。In the heterocore optical fiber sensor device of the present invention, the light loss of each compound detected when the coating film made of oleic acid is provided and the light of each compound detected when the coating film made of dioctyl phosphate is provided. A graph showing a comparison with loss.

次に、添付の図面を参照しながら本発明の実施の形態についてさらに詳しく説明する。 Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

図1に示すように、本実施形態のヘテロコア光ファイバセンサ装置1は、光伝送部2,2の間に挟まれた所定長のヘテロコア部3を有するヘテロコア光ファイバ4を備える。光伝送部2は、コア5aと、コア5aの外周面を被覆するクラッド6aとからなるマルチモード光ファイバであり、ヘテロコア部3は、コア5aより小径のコア5bと、コア5bの外周面を被覆するクラッド6bとからなるシングルモード光ファイバである。 As shown in FIG. 1, the heterocore optical fiber sensor device 1 of the present embodiment includes a heterocore optical fiber 4 having a heterocore portion 3 of a predetermined length sandwiched between optical transmission units 2 and 2. The optical transmission unit 2 is a multimode optical fiber composed of a core 5a and a clad 6a covering the outer peripheral surface of the core 5a, and the heterocore portion 3 has a core 5b having a diameter smaller than that of the core 5a and an outer peripheral surface of the core 5b. It is a single mode optical fiber composed of a clad 6b to be coated.

ヘテロコア光ファイバセンサ装置1は、ヘテロコア部3のクラッド6bの外周面に形成された負荷電性脂質からなる被覆膜7を備えている。前記負荷電性脂質としては、例えば、オレイン酸又はリン酸ジオクチルを用いることができる。 The heterocore optical fiber sensor device 1 includes a coating film 7 made of a loaded electric lipid formed on the outer peripheral surface of the clad 6b of the heterocore portion 3. As the charged electric lipid, for example, oleic acid or dioctyl phosphate can be used.

被腹膜7は、例えば、ヘテロコア部3のクラッド6bの外周面を濃度5〜20ミリモルのポリリジン水溶液で処理して正に荷電させ、次いで該外周面に、水−エタノール容液に分散した前記負荷電性脂質を滴下して、20〜24時間放置することにより形成することができる。前記水−エタノール容液は、例えば、2.5質量%のエタノールを含み、該水−エタノール容液の全量に対し、例えば、1質量%の前記負荷電性脂質を含んでいる。 In the peritoneum 7, for example, the outer peripheral surface of the clad 6b of the heterocore portion 3 is treated with a polylysine aqueous solution having a concentration of 5 to 20 mmol to be positively charged, and then the outer peripheral surface is loaded with a water-ethanol solution. It can be formed by dropping an electric lipid and leaving it to stand for 20 to 24 hours. The water-ethanol solution contains, for example, 2.5% by mass of ethanol, and contains, for example, 1% by mass of the loaded electric lipid with respect to the total amount of the water-ethanol solution.

図2に示すように、本実施形態のヘテロコア光ファイバセンサ装置1は、被検出部21にヘテロコア光ファイバ4のヘテロコア部3を配置したときに、光ファイバ4の一方の端部にLFD等の光源22を備え、光ファイバ4の他方の端部に例えばスペクトルアナライザ、分光器等の検出装置23を備える。また、検出装置23には、検出装置23で検出された反射光の強度の変化度合いを解析するパソコン等の解析装置24が接続されている。 As shown in FIG. 2, in the heterocore optical fiber sensor device 1 of the present embodiment, when the heterocore portion 3 of the heterocore optical fiber 4 is arranged in the detected portion 21, an LFD or the like is placed on one end of the optical fiber 4. A light source 22 is provided, and a detection device 23 such as a spectrum analyzer or a spectroscope is provided at the other end of the optical fiber 4. Further, the detection device 23 is connected to an analysis device 24 such as a personal computer that analyzes the degree of change in the intensity of the reflected light detected by the detection device 23.

本実施形態のヘテロコア光ファイバセンサ装置1では、光源22から光伝送部2に導入された光を光伝送部2のコア5aを介して伝送すると、ヘテロコア部3でそのクラッド6bに漏れ出た光が被覆膜7で反射する。このとき、被覆膜7の周囲の外界に前記負荷電性脂質に作用する化合物が存在すると、該化合物の作用により該負荷電性脂質からなる被腹膜7の屈折率が変化し、この結果、被覆膜7で反射する光の強度が変化する。 In the heterocore optical fiber sensor device 1 of the present embodiment, when the light introduced from the light source 22 into the optical transmission unit 2 is transmitted via the core 5a of the optical transmission unit 2, the light leaked to the clad 6b at the heterocore unit 3 Is reflected by the coating film 7. At this time, if a compound acting on the loaded electric lipid is present in the outside world around the coating film 7, the refractive index of the abdominal membrane 7 composed of the loaded electric lipid changes due to the action of the compound, and as a result, the refractive index of the abdominal membrane 7 composed of the loaded electric lipid changes. The intensity of the light reflected by the coating film 7 changes.

前記負荷電性脂質に作用する化合物としては、例えば、キニーネ、シンコニジン、ヒドロキニジン、ストリキニーネ、グラミン、パパベリン、ノルラウダノシン、カフェイン、デオフィリン、チアミン、ダイゼイン等の化合物を挙げることができる。 Examples of the compound acting on the charged electric lipid include compounds such as quinine, cinchonidine, hydroquinidine, strychnine, gramine, papaverine, norlaudanocin, caffeine, deophylline, thiamine, and daidzein.

そこで、本実施形態のヘテロコア光ファイバセンサ装置1によれば、ヘテロコア部3の被覆膜7で反射する光の強度の変化を検出装置23で検出し、解析装置24で解析することにより、被覆膜7の周囲の外界に存在する化合物を検知することができる。このとき、前記負荷電性脂質からなる被覆膜7の屈折率の変化は、該負荷電性脂質に作用する化合物により異なるので、ヘテロコア部3の被覆膜7で反射する光の強度の変化度合により、複数の化合物を検知の対象として識別することができる。 Therefore, according to the heterocore optical fiber sensor device 1 of the present embodiment, the change in the intensity of the light reflected by the coating film 7 of the heterocore portion 3 is detected by the detection device 23 and analyzed by the analysis device 24 to be covered. Compounds existing in the outside world around the cover film 7 can be detected. At this time, since the change in the refractive index of the coating film 7 made of the loaded electric lipid differs depending on the compound acting on the loaded electric lipid, the change in the intensity of the light reflected by the coating film 7 of the heterocore portion 3 Depending on the degree, a plurality of compounds can be identified as detection targets.

次に、キニーネ、シンコニジン、ヒドロキニジン、ストリキニーネ、グラミン、パパベリン、ノルラウダノシン、カフェイン、デオフィリン、チアミン、ダイゼインをそれぞれ10ミリモルの濃度で含む11種類の水溶液を調製した。 Next, 11 kinds of aqueous solutions containing quinine, cinchonidine, hydroquinidine, strychnine, gramine, papaverine, norlaudanosin, caffeine, deophylline, thiamine, and daidzein at a concentration of 10 mmol each were prepared.

次に、オレイン酸からなる被覆膜7を備えるヘテロコア光ファイバセンサ装置1のヘテロコア部3を各水溶液に浸漬し、光源22から波長範囲360-2000nmの白色光を光伝送部2に導入し、検出装置23で各水溶液の純水に対する光損失を検出した。結果を図3に示す。また、リン酸ジオクチルからなる被覆膜7を備えるヘテロコア光ファイバセンサ装置1を用いた以外は、オレイン酸からなる被覆膜7を備えるヘテロコア光ファイバセンサ装置1の場合と全く同一にして、前記各水溶液の純水に対する光損失を検出した。結果を図4に示す。 Next, the heterocore portion 3 of the heterocore optical fiber sensor device 1 provided with the coating film 7 made of oleic acid is immersed in each aqueous solution, and white light having a wavelength range of 360-2000 nm is introduced into the optical transmission portion 2 from the light source 22. The detection device 23 detected the light loss of each aqueous solution with respect to pure water. The results are shown in FIG. Further, except that the heterocore optical fiber sensor device 1 provided with the coating film 7 made of dioctyl phosphate was used, it was made exactly the same as the case of the heterocore optical fiber sensor device 1 provided with the covering film 7 made of oleic acid. The light loss of each aqueous solution with respect to pure water was detected. The results are shown in FIG.

図3及び図4から、オレイン酸からなる被覆膜7又はリン酸ジオクチルからなる被覆膜7を備えるヘテロコア光ファイバセンサ装置1によれば、前記キニーネ、シンコニジン、ヒドロキニジン、ストリキニーネ、グラミン、パパベリン、ノルラウダノシン、カフェイン、デオフィリン、チアミン、ダイゼインについて、純水に対してそれぞれ異なる光損失が検出され、前記キニーネ、シンコニジン、ヒドロキニジン、ストリキニーネ、グラミン、パパベリン、ノルラウダノシン、カフェイン、デオフィリン、チアミン、ダイゼインのそれぞれを識別できることが明らかである。 From FIGS. 3 and 4, according to the heterocore optical fiber sensor device 1 provided with the coating film 7 made of oleic acid or the coating film 7 made of dioctyl phosphate, the quinine, cinchonidine, hydroquinidine, strychnine, gramine, papaverine , Norlaudanosin, caffeine, deophylline, thiamine, and dizein have different photolosses with respect to pure water, and the above-mentioned quinine, cinchonidine, hydroquinidine, strychnine, gramin, papaverine, norlaudanocin, caffeine, deophylline, thiamine, and dizein. It is clear that each of these can be identified.

次に、オレイン酸からなる被覆膜7を備えるヘテロコア光ファイバセンサ装置1のヘテロコア部3を、純水、10ミリモル−キニーネ水溶液、50ミリモル−キニーネ水溶液にそれぞれ浸漬し、光源22から波長範囲360-2000nmの白色光を光伝送部2に導入し、検出装置23でそれぞれの純水に対する光損失スペクトルを測定した。結果を図5に示す。 Next, the heterocore portion 3 of the heterocore optical fiber sensor device 1 provided with the coating film 7 made of oleic acid is immersed in pure water, a 10 mmol-kinine aqueous solution, and a 50 mmol-kinine aqueous solution, respectively, and has a wavelength range of 360 from the light source 22. White light of -2000 nm was introduced into the optical transmission unit 2, and the light loss spectrum for each pure water was measured by the detection device 23. The results are shown in FIG.

図5から、オレイン酸からなる被覆膜7を備えるヘテロコア光ファイバセンサ装置1によれば、純水に比較すると、キニーネ水溶液に対する光損失が全体に増加することが明らかであり、さらにキニーネの濃度の増加に伴って光損失が全体に増加することが明らかである。 From FIG. 5, according to the heterocore optical fiber sensor device 1 provided with the coating film 7 made of oleic acid, it is clear that the light loss with respect to the quinine aqueous solution is increased as a whole as compared with pure water, and the concentration of quinine is further increased. It is clear that the light loss increases as a whole with the increase of.

また、リン酸ジオクチルからなる被覆膜7を備えるヘテロコア光ファイバセンサ装置1のヘテロコア部3を、純水、10ミリモル−キニーネ水溶液にそれぞれ浸漬し、光源22から波長範囲360-2000nmの白色光を光伝送部2に導入し、検出装置23でそれぞれの純水に対する光損失スペクトルを測定した。結果を図6に示す。 Further, the heterocore portion 3 of the heterocore optical fiber sensor device 1 provided with the coating film 7 made of dioctyl phosphate is immersed in pure water and a 10 mmol-quinine aqueous solution, respectively, and white light having a wavelength range of 360-2000 nm is emitted from the light source 22. It was introduced into the optical transmission unit 2, and the optical loss spectrum for each pure water was measured by the detection device 23. The results are shown in FIG.

図6から、リン酸ジオクチルからなる被覆膜7を備えるヘテロコア光ファイバセンサ装置1によれば、純水に比較すると、キニーネ水溶液に対する光損失が全体に増加することが明らかである。 From FIG. 6, it is clear that according to the heterocore optical fiber sensor device 1 provided with the coating film 7 made of dioctyl phosphate, the light loss with respect to the quinine aqueous solution is increased as a whole as compared with pure water.

次に、キニーネ、シンコニジン、ヒドロキニジン、ストリキニーネ、グラミン、パパベリン、ノルラウダノシン、カフェイン、デオフィリン、チアミン、ダイゼインをそれぞれ10ミリモルの濃度で含む11種類の水溶液の純水に対する光損失の、オレイン酸からなる被覆膜7を備えるヘテロコア光ファイバセンサ装置1による検出結果と、リン酸ジオクチルからなる被覆膜7を備えるヘテロコア光ファイバセンサ装置1による検出結果とを重ねて、図7に示す。 Next, it consists of oleic acid, which is a photoloss of 11 aqueous solutions containing quinine, cinconidine, hydroquinidine, strikinine, gramine, papaverine, norlaudanosin, caffeine, deophylline, thiamine, and daizein at concentrations of 10 mmol each. The detection result by the heterocore optical fiber sensor device 1 including the coating film 7 and the detection result by the heterocore optical fiber sensor device 1 including the coating film 7 made of dioctyl phosphate are shown in FIG. 7 in an overlapping manner.

図7から、同一の化合物の水溶液であっても、オレイン酸からなる被覆膜7を備えるヘテロコア光ファイバセンサ装置1と、リン酸ジオクチルからなる被覆膜7を備えるヘテロコア光ファイバセンサ装置1とでは、純水に対する光損失の値が異なっており、オレイン酸からなる被覆膜7を備えるヘテロコア光ファイバセンサ装置1の検出結果と、リン酸ジオクチルからなる被覆膜7を備えるヘテロコア光ファイバセンサ装置1の検出結果とを合わせることにより、特定の化合物をより確実に識別できることが明らかである。 From FIG. 7, even if it is an aqueous solution of the same compound, the heterocore optical fiber sensor device 1 having a coating film 7 made of oleic acid and the heterocore optical fiber sensor device 1 having a coating film 7 made of dioctyl phosphate. The values of the light loss with respect to pure water are different, and the detection result of the heterocore optical fiber sensor device 1 provided with the coating film 7 made of oleic acid and the heterocore optical fiber sensor provided with the coating film 7 made of dioctyl phosphate It is clear that the specific compound can be more reliably identified by combining with the detection result of the device 1.

1…ヘテロコア光ファイバセンサ装置、 2…光伝送部2、 3…ヘテロコア部、 4…光ファイバ、 5a、5b…コア、 6a、6b…クラッド、 7…被腹膜、 21…被検出部、 22…光源22、 23…検出装置、 24…解析装置。 1 ... Heterocore optical fiber sensor device, 2 ... Optical transmission section 2, 3 ... Heterocore section, 4 ... Optical fiber, 5a, 5b ... Core, 6a, 6b ... Clad, 7 ... Peritoneum, 21 ... Detected section, 22 ... Light sources 22, 23 ... Detection device, 24 ... Analytical device.

Claims (3)

コア及びクラッドを有する光伝送部と、該光伝送部のコア及びクラッドに各々連なるコア及びクラッドを有するヘテロコア部とを備え、該ヘテロコア部のコアが該光伝送部のコアよりも小径である光ファイバを備えるヘテロコア光ファイバセンサ装置であって、
該ヘテロコア部のクラッドの外周面に、負荷電性脂質からなる被覆膜を備え、該負荷電性脂質に作用する化合物を検知することを特徴とするヘテロコア光ファイバセンサ装置。
An optical transmission unit having a core and a cladding and a heterocore portion having a core and a cladding connected to the core and the cladding of the optical transmission unit, respectively, and the core of the heterocore portion has a smaller diameter than the core of the optical transmission unit. A heterocore optical fiber sensor device equipped with a fiber.
A heterocore optical fiber sensor device comprising a coating film made of a loaded electric lipid on the outer peripheral surface of the clad of the heterocore portion, and detecting a compound acting on the loaded electric lipid.
請求項1記載のヘテロコア光ファイバセンサ装置において、前記負荷電性脂質は、オレイン酸又はリン酸ジオクチルであることを特徴とするヘテロコア光ファイバセンサ装置。 The heterocore optical fiber sensor device according to claim 1, wherein the loaded electric lipid is oleic acid or dioctyl phosphate. 請求項1又は請求項2記載のヘテロコア光ファイバセンサ装置において、前記負荷電性脂質に作用する化合物は、キニーネ、シンコニジン、ヒドロキニジン、ストリキニーネ、グラミン、パパベリン、ノルラウダノシン、カフェイン、デオフィリン、チアミン、ダイゼインからなる群から選択される1種の化合物であることを特徴とするヘテロコア光ファイバセンサ装置。 In the heterocore optical fiber sensor device according to claim 1 or 2, the compounds acting on the loaded electric lipid are quinine, cinchonidine, hydroquinidine, striquinine, gramine, papaverine, norlaudanocin, caffeine, deophylline, thiamine, and dizein. A heterocore optical fiber sensor device comprising one compound selected from the group consisting of.
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細木 藍ら: "脂質膜を固定化したヘテロコア光ファイバの化学センシングへの応用", 電子情報通信学会 信学技報, vol. OFT2019-38, JPN6023040321, 4 October 2019 (2019-10-04), ISSN: 0005164621 *

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